西南石油大学学报（自然科学版）2026，Vol.48Issue(4)：81-93,13.DOI:10.11885/j.issn.1674-5086.2026.02.09.01
PG2储气库地质气藏工程方案研究
A Study on the Geological and Gas Reservoir Engineering Plan for PG2 Underground Gas Storage
摘要
Abstract
The integrated construction of oil reservoir-type gas storage coupled with natural gas flooding for enhanced oil recovery has emerged as a significant direction in recent years.Through mechanisms such as gravity segregation,miscible displacement,and extraction,this approach can effectively improve crude oil recovery while establishing large-scale seasonal peak-shaving capacity.Taking the PG2 Underground Gas Storage of Jidong Oilfield as an example,this paper systematically conducts geological condition evaluation for gas storage construction,sealing analysis of cap rocks and faults,design of injec-tion-production capacity,and optimization of storage capacity parameters,thereby demonstrating the feasibility of converting such oil reservoirs into gas storage facilities.The results indicate that the target block features thick reservoirs,favorable physi-cal properties,excellent fluid characteristics,and regionally stable cap rocks with strong sealing capability.The comprehensive evaluation shows that the dynamic sealing pressure limit of the geological body reaches 44.9 MPa,providing a solid geological foundation for gas storage construction.The proposed scheme achieves a working gas volume of over 9.0×108 m3,a daily peak-shaving capacity of nearly 0.1×108 m3,and an expected increase in crude oil recovery of approximately 20 percentage points compared to water flooding.These results confirm that converting blocky volatile oil reservoirs into gas storage is technically feasible,economically effective,and the associated methodologies can serve as an important reference for similar reservoirs aiming to simultaneously enhance oil recovery and provide gas storage peak-shaving services.关键词
块状挥发性油藏/油藏型地下储气库/圈闭密封性/库容参数/可行性研究Key words
massive volatile oil reservoirs/underground gas storage rebuilt from oil reservoir/trap sealing property/storage capacity parameters/feasibility studies分类
天文与地球科学引用本文复制引用
商琳,何海燕,高广亮,孙彦春,王淼,李聪..PG2储气库地质气藏工程方案研究[J].西南石油大学学报（自然科学版）,2026,48(4):81-93,13.基金项目
中国石油油气和新能源分公司科技项目(2023YQX106) （2023YQX106）
